For Step paper 2 2002, im having trouble with question 3 when they ask u to deduce that no 2 fermat numbers have common factors greater than 1. i guess they're asking you to prove that their primes? some hints please!!
For Step paper 2 2002, im having trouble with question 3 when they ask u to deduce that no 2 fermat numbers have common factors greater than 1. i guess they're asking you to prove that their primes? some hints please!!
They aren't primes. You are proving that they are coprime though. It is fairly obvious from the induction you have just proved. If something divides Fk then it divides F0F1F2...Fk-1 + 2 edit: lol I misread the question I think but w/e